/* =========================================================
   PostAI Discover — shared styles for /discover/ pages
   Aligns with dark-theme design system used on video-showcase
   & testimonial pages.
   ========================================================= */

:root {
  --dx-bg: #0a0a12;
  --dx-bg-alt: #0d0d1a;
  --dx-bg-card: #13131f;
  --dx-bg-card-hover: #1a1a2e;
  --dx-border: rgba(139, 92, 246, 0.15);
  --dx-border-hover: rgba(139, 92, 246, 0.45);
  --dx-accent: #8b5cf6;
  --dx-accent-bright: #a855f7;
  --dx-accent-dim: rgba(139, 92, 246, 0.12);
  --dx-teal: #14b8a6;
  --dx-green: #10b981;
  --dx-amber: #f59e0b;
  --dx-text: #f1f5f9;
  --dx-text-2: #94a3b8;
  --dx-text-3: #64748b;
  --dx-radius: 12px;
  --dx-radius-lg: 20px;
}

.dx-body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--dx-bg);
  color: var(--dx-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.dx-main { flex: 1; }

.dx-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Status pills ---------------------------------------- */
.dx-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.dx-status--upcoming { background: rgba(245, 158, 11, 0.12); color: var(--dx-amber); border-color: rgba(245, 158, 11, 0.35); }
.dx-status--launched { background: rgba(16, 185, 129, 0.12); color: var(--dx-green); border-color: rgba(16, 185, 129, 0.35); }
.dx-status--sold-out { background: rgba(148, 163, 184, 0.12); color: var(--dx-text-2); border-color: rgba(148, 163, 184, 0.35); }

/* Hero ------------------------------------------------ */
.dx-hero {
  padding: 64px 0 40px;
  background:
    radial-gradient(ellipse 60% 60% at 20% 0%, rgba(139, 92, 246, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 10%, rgba(20, 184, 166, 0.10), transparent 60%),
    var(--dx-bg);
  border-bottom: 1px solid var(--dx-border);
}
.dx-hero__crumbs {
  font-size: 13px;
  color: var(--dx-text-3);
  margin-bottom: 18px;
}
.dx-hero__crumbs a { color: var(--dx-text-2); text-decoration: none; }
.dx-hero__crumbs a:hover { color: var(--dx-text); }
.dx-hero__title {
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  background: linear-gradient(135deg, #fff 0%, #c4b5fd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.dx-hero__zh {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 600;
  color: var(--dx-text-2);
  margin: -4px 0 18px;
}
.dx-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.dx-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--dx-accent-dim);
  border: 1px solid var(--dx-border);
  color: var(--dx-text-2);
  font-size: 13px;
  font-weight: 500;
}
.dx-hero__oneliner {
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--dx-text-2);
  max-width: 820px;
  margin: 10px 0 24px;
}
.dx-hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.dx-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  font-family: inherit;
}
.dx-btn--primary {
  background: linear-gradient(135deg, var(--dx-accent), #6d28d9);
  color: #fff;
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
}
.dx-btn--primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(139, 92, 246, 0.5); }
.dx-btn--ghost {
  background: transparent;
  border-color: var(--dx-border);
  color: var(--dx-text-2);
}
.dx-btn--ghost:hover { background: var(--dx-accent-dim); color: var(--dx-text); border-color: var(--dx-border-hover); }

/* Section framing ------------------------------------- */
.dx-section { padding: 56px 0; }
.dx-section--tight { padding: 32px 0 16px; }
.dx-section__head { margin-bottom: 28px; }
.dx-section__eyebrow {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--dx-accent-bright);
  margin-bottom: 8px;
}
.dx-section__title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--dx-text);
}
.dx-section__sub {
  color: var(--dx-text-2);
  font-size: 15px;
}

/* Key facts table ------------------------------------- */
.dx-facts {
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius-lg);
  overflow: hidden;
}
.dx-facts__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--dx-border);
}
.dx-facts__cell {
  background: var(--dx-bg-card);
  padding: 20px 22px;
}
.dx-facts__label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--dx-text-3);
  margin-bottom: 6px;
  font-weight: 600;
}
.dx-facts__value {
  font-size: 16px;
  font-weight: 600;
  color: var(--dx-text);
}

/* Lang tabs ------------------------------------------- */
.dx-lang-tabs {
  display: inline-flex;
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--dx-border);
  background: var(--dx-bg-card);
  margin-bottom: 18px;
}
.dx-lang-tab {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--dx-text-2);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}
.dx-lang-tab.active {
  background: var(--dx-accent-dim);
  color: var(--dx-text);
  box-shadow: inset 0 0 0 1px var(--dx-border-hover);
}

/* Filter chips ---------------------------------------- */
.dx-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.dx-filter__chip {
  appearance: none;
  border: 1px solid var(--dx-border);
  background: transparent;
  color: var(--dx-text-2);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.2s ease;
}
.dx-filter__chip:hover { color: var(--dx-text); border-color: var(--dx-border-hover); }
.dx-filter__chip.active {
  background: var(--dx-accent);
  border-color: var(--dx-accent);
  color: #fff;
}

/* Video grid ------------------------------------------ */
.dx-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 22px;
}
.dx-video-card {
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius-lg);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}
.dx-video-card:hover {
  transform: translateY(-3px);
  border-color: var(--dx-border-hover);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
}
.dx-video-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  background: #000;
  overflow: hidden;
}
.dx-video-card__media iframe,
.dx-video-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
}
.dx-video-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.dx-video-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.dx-video-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--dx-text);
  line-height: 1.35;
}
.dx-video-card__agent {
  display: flex;
  align-items: center;
  gap: 10px;
}
.dx-video-card__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--dx-accent), var(--dx-teal));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}
.dx-video-card__agent-info { display: flex; flex-direction: column; line-height: 1.2; }
.dx-video-card__agent-name { font-size: 13px; font-weight: 600; color: var(--dx-text); }
.dx-video-card__agent-meta { font-size: 11px; color: var(--dx-text-3); }
.dx-video-card__whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: auto;
  padding: 10px 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.dx-video-card__whatsapp:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(37, 211, 102, 0.4); }
.dx-video-card__whatsapp svg { width: 15px; height: 15px; }

/* Empty state ----------------------------------------- */
.dx-empty {
  text-align: center;
  padding: 48px 20px;
  border: 1px dashed var(--dx-border);
  border-radius: var(--dx-radius-lg);
  background: var(--dx-bg-alt);
  color: var(--dx-text-2);
}
.dx-empty h3 { font-size: 18px; margin: 0 0 6px; color: var(--dx-text); }
.dx-empty p { font-size: 14px; margin: 0 0 16px; }
.dx-empty a { color: var(--dx-accent-bright); font-weight: 600; text-decoration: none; }
.dx-empty a:hover { text-decoration: underline; }

/* USP list -------------------------------------------- */
.dx-usp {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.dx-usp__item {
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius);
  padding: 18px 20px;
  font-size: 14px;
  color: var(--dx-text);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.dx-usp__check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--dx-accent-dim);
  color: var(--dx-accent-bright);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

/* Comparables ----------------------------------------- */
.dx-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.dx-compare-card {
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius-lg);
  padding: 22px;
  text-decoration: none;
  color: var(--dx-text);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: block;
}
.dx-compare-card:hover {
  transform: translateY(-2px);
  border-color: var(--dx-border-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.dx-compare-card__name { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.dx-compare-card__meta { font-size: 12px; color: var(--dx-text-3); margin-bottom: 10px; }
.dx-compare-card__desc { font-size: 13px; color: var(--dx-text-2); }

/* FAQ ------------------------------------------------- */
.dx-faq-list { display: flex; flex-direction: column; gap: 10px; }
.dx-faq {
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius);
  overflow: hidden;
}
.dx-faq summary {
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  color: var(--dx-text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.dx-faq summary::-webkit-details-marker { display: none; }
.dx-faq summary::after {
  content: '+';
  font-size: 22px;
  color: var(--dx-accent-bright);
  font-weight: 400;
  transition: transform 0.2s ease;
}
.dx-faq[open] summary::after { transform: rotate(45deg); }
.dx-faq__body {
  padding: 0 22px 20px;
  color: var(--dx-text-2);
  font-size: 14px;
  line-height: 1.6;
}

/* CTA band -------------------------------------------- */
.dx-cta-band {
  margin: 48px 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(20, 184, 166, 0.08));
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius-lg);
  padding: 36px;
  text-align: center;
}
.dx-cta-band h3 { font-size: clamp(22px, 2.5vw, 28px); margin: 0 0 10px; }
.dx-cta-band p { color: var(--dx-text-2); margin: 0 0 20px; font-size: 15px; }

/* Hub grid (index.html) ------------------------------- */
.dx-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.dx-hub-card {
  position: relative;
  background: var(--dx-bg-card);
  border: 1px solid var(--dx-border);
  border-radius: var(--dx-radius-lg);
  padding: 28px 26px;
  text-decoration: none;
  color: var(--dx-text);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.dx-hub-card:hover {
  transform: translateY(-3px);
  border-color: var(--dx-border-hover);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
}
.dx-hub-card__status { align-self: flex-start; }
.dx-hub-card__name { font-size: 22px; font-weight: 800; line-height: 1.2; }
.dx-hub-card__zh { font-size: 14px; color: var(--dx-text-2); }
.dx-hub-card__meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.dx-hub-card__meta span {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--dx-accent-dim);
  color: var(--dx-text-2);
}
.dx-hub-card__oneliner {
  font-size: 13.5px;
  color: var(--dx-text-2);
  line-height: 1.5;
  margin-top: 6px;
}
.dx-hub-card__cta {
  margin-top: auto;
  padding-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--dx-accent-bright);
}
.dx-hub-card__cta::after { content: ' →'; }

/* Responsive ------------------------------------------ */
@media (max-width: 700px) {
  .dx-hero { padding: 40px 0 28px; }
  .dx-section { padding: 40px 0; }
  .dx-cta-band { padding: 28px 22px; }
}